cd05bde838c0e386b477d2be25c2953c09401cc2
[~bandali/configs] / init.org
1 #+title: =aminb='s Literate Emacs Configuration
2 #+author: Amin Bandali
3 #+babel: :cache yes
4 #+property: header-args :tangle yes
5
6 * About
7 :PROPERTIES:
8 :CUSTOM_ID: about
9 :END:
10
11 This org file is my literate configuration for GNU Emacs, and is
12 tangled to [[./init.el][init.el]]. Packages are installed and managed using
13 [[https://github.com/emacscollective/borg][Borg]]. Over the years, I've taken inspiration from configurations of
14 many different people. Some of the configurations that I can remember
15 off the top of my head are:
16
17 - [[https://github.com/dieggsy/dotfiles][dieggsy/dotfiles]]: literate Emacs and dotfiles configuration, uses
18 straight.el for managing packages
19 - [[https://github.com/dakra/dmacs][dakra/dmacs]]: literate Emacs configuration, using Borg for managing
20 packages
21 - [[http://pages.sachachua.com/.emacs.d/Sacha.html][Sacha Chua's literate Emacs configuration]]
22 - [[https://github.com/dakrone/eos][dakrone/eos]]
23 - Ryan Rix's [[http://doc.rix.si/cce/cce.html][Complete Computing Environment]] ([[http://doc.rix.si/projects/fsem.html][about cce]])
24 - [[https://github.com/jwiegley/dot-emacs][jwiegley/dot-emacs]]: nix-based configuration
25 - [[https://github.com/wasamasa/dotemacs][wasamasa/dotemacs]]
26 - [[https://github.com/hlissner/doom-emacs][Doom Emacs]]
27
28 I'd like to have a fully reproducible Emacs setup (part of the reason
29 why I store my configuration in this repository) but unfortunately out
30 of the box, that's not achievable with =package.el=, not currently
31 anyway. So, I've opted to use Borg. For what it's worth, I briefly
32 experimented with [[https://github.com/raxod502/straight.el][straight.el]], but found that it added about 2 seconds
33 to my init time; which is unacceptable for me: I use Emacs as my
34 window manager (via EXWM) and coming from bspwm, I'm too used to
35 having fast startup times.
36
37 ** Installation
38
39 To use this config for your Emacs, first you need to clone this repo,
40 then bootstrap Borg, tell Borg to retrieve package submodules, and
41 byte-compiled the packages. Something along these lines should work:
42
43 #+begin_src sh :tangle no
44 git clone https://github.com/aminb/dotfiles ~/.emacs.d
45 cd ~/.emacs.d
46 make bootstrap-borg
47 make tangle-init
48 make bootstrap
49 make build
50 #+end_src
51
52 * Contents :toc_1:noexport:
53
54 - [[#about][About]]
55 - [[#header][Header]]
56 - [[#initial-setup][Initial setup]]
57 - [[#core][Core]]
58 - [[#post-initialization][Post initialization]]
59 - [[#footer][Footer]]
60
61 * Header
62 :PROPERTIES:
63 :CUSTOM_ID: header
64 :END:
65
66 ** First line
67
68 #+begin_src emacs-lisp :comments none
69 ;;; init.el --- Amin Bandali's Emacs config -*- lexical-binding: t ; eval: (view-mode 1)-*-
70 #+end_src
71
72 Enable =view-mode=, which both makes the file read-only (as a reminder
73 that =init.el= is an auto-generated file, not supposed to be edited),
74 and provides some convenient key bindings for browsing through the
75 file.
76
77 ** License
78
79 #+begin_src emacs-lisp :comments none
80 ;; Copyright (C) 2018 Amin Bandali <amin@aminb.org>
81
82 ;; This program is free software: you can redistribute it and/or modify
83 ;; it under the terms of the GNU General Public License as published by
84 ;; the Free Software Foundation, either version 3 of the License, or
85 ;; (at your option) any later version.
86
87 ;; This program is distributed in the hope that it will be useful,
88 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
89 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
90 ;; GNU General Public License for more details.
91
92 ;; You should have received a copy of the GNU General Public License
93 ;; along with this program. If not, see <https://www.gnu.org/licenses/>.
94 #+end_src
95
96 ** Commentary
97
98 #+begin_src emacs-lisp :comments none
99 ;;; Commentary:
100
101 ;; Emacs configuration of Amin Bandali, computer scientist and functional
102 ;; programmer.
103
104 ;; THIS FILE IS AUTO-GENERATED FROM `init.org'.
105 #+end_src
106
107 ** Naming conventions
108
109 The conventions below were inspired by [[https://github.com/hlissner/doom-emacs][Doom]]'s conventions, found
110 [[https://github.com/hlissner/doom-emacs/blob/5dacbb7cb1c6ac246a9ccd15e6c4290def67757c/core/core.el#L3-L17][here]]. Naturally, I use my initials, =ab=, instead of =doom=.
111
112 #+begin_src emacs-lisp :comments none
113 ;; Naming conventions:
114 ;;
115 ;; ab-... public variables or non-interactive functions
116 ;; ab--... private anything (non-interactive), not safe for direct use
117 ;; ab/... an interactive function; safe for M-x or keybinding
118 ;; ab:... an evil operator, motion, or command
119 ;; ab|... a hook function
120 ;; ab*... an advising function
121 ;; ab@... a hydra command
122 ;; ...! a macro
123 #+end_src
124
125 * Initial setup
126 :PROPERTIES:
127 :CUSTOM_ID: initial-setup
128 :END:
129
130 #+begin_src emacs-lisp :comments none
131 ;;; Code:
132 #+end_src
133
134 ** Emacs initialization
135
136 I'd like to do a couple of measurements of Emacs' startup time. First,
137 let's see how long Emacs takes to start up, before even loading
138 =init.el=, i.e. =user-init-file=:
139
140 #+begin_src emacs-lisp
141 (defvar ab--before-user-init-time (current-time)
142 "Value of `current-time' when Emacs begins loading `user-init-file'.")
143 (message "Loading Emacs...done (%.3fs)"
144 (float-time (time-subtract ab--before-user-init-time
145 before-init-time)))
146 #+end_src
147
148 Also, temporarily increase ~gc-cons-threshhold~ and
149 ~gc-cons-percentage~ during startup to reduce garbage collection
150 frequency. Clearing the ~file-name-handler-alist~ seems to help reduce
151 startup time as well.
152
153 #+begin_src emacs-lisp
154 (defvar ab--gc-cons-threshold gc-cons-threshold)
155 (defvar ab--gc-cons-percentage gc-cons-percentage)
156 (defvar ab--file-name-handler-alist file-name-handler-alist)
157 (setq gc-cons-threshold (* 400 1024 1024) ; 400 MiB
158 gc-cons-percentage 0.6
159 file-name-handler-alist nil
160 ;; sidesteps a bug when profiling with esup
161 esup-child-profile-require-level 0)
162 #+end_src
163
164 Of course, we'd like to set them back to their defaults once we're
165 done initializing.
166
167 #+begin_src emacs-lisp
168 (add-hook
169 'after-init-hook
170 (lambda ()
171 (let ((elapsed (float-time (time-subtract (current-time)
172 ab--before-user-init-time))))
173 (message "Loading %s...done (%.3fs) [after-init]"
174 user-init-file elapsed))
175 (setq gc-cons-threshold ab--gc-cons-threshold
176 gc-cons-percentage ab--gc-cons-percentage
177 file-name-handler-alist ab--file-name-handler-alist)))
178 #+end_src
179
180 Increase the number of lines kept in message logs (the =*Messages*=
181 buffer).
182
183 #+begin_src emacs-lisp
184 (setq message-log-max 20000)
185 #+end_src
186
187 Optionally, we could suppress some byte compiler warnings like below,
188 but for now I've decided to keep them enabled. See documentation for
189 ~byte-compile-warnings~ for more details.
190
191 #+begin_src emacs-lisp
192 ;; (setq byte-compile-warnings
193 ;; '(not free-vars unresolved noruntime lexical make-local))
194 #+end_src
195
196 ** Package management
197
198 *** No =package.el=
199
200 I can do all my package management things with Borg, and don't need
201 Emacs' built-in =package.el=. Emacs 27 lets us disable =package.el= in
202 the =early-init-file= (see [[https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=24acb31c04b4048b85311d794e600ecd7ce60d3b][here]]).
203
204 #+begin_src emacs-lisp :tangle early-init.el
205 (setq package-enable-at-startup nil)
206 #+end_src
207
208 But since Emacs 27 isn't out yet (Emacs 26 is just around the corner
209 right now), and even when released it'll be long before most distros
210 ship in their repos, I'll still put the old workaround with the
211 commented call to ~package-initialize~ here anyway.
212
213 #+begin_src emacs-lisp
214 (setq package-enable-at-startup nil)
215 ;; (package-initialize)
216 #+end_src
217
218 *** Borg
219
220 #+begin_quote
221 Assimilate Emacs packages as Git submodules
222 #+end_quote
223
224 [[https://github.com/emacscollective/borg][Borg]] is at the heart of package management of my Emacs setup. In
225 short, it creates a git submodule in =lib/= for each package, which
226 can then be managed with the help of Magit or other tools.
227
228 #+begin_src emacs-lisp
229 (setq user-init-file (or load-file-name buffer-file-name)
230 user-emacs-directory (file-name-directory user-init-file))
231 (add-to-list 'load-path
232 (expand-file-name "lib/borg" user-emacs-directory))
233 (require 'borg)
234 (borg-initialize)
235 #+end_src
236
237 *** =use-package=
238
239 #+begin_quote
240 A use-package declaration for simplifying your .emacs
241 #+end_quote
242
243 [[https://github.com/jwiegley/use-package][use-package]] is an awesome utility for managing and configuring
244 packages (in our case especially the latter) in a neatly organized way
245 and without compromising on performance.
246
247 #+begin_src emacs-lisp
248 (require 'use-package)
249 (if nil ; set to t when need to debug init
250 (setq use-package-verbose t
251 use-package-expand-minimally nil
252 use-package-compute-statistics t
253 debug-on-error t)
254 (setq use-package-verbose nil
255 use-package-expand-minimally t))
256 #+end_src
257
258 *** Epkg
259
260 #+begin_quote
261 Browse the Emacsmirror package database
262 #+end_quote
263
264 Epkg provides access to a local copy of the [[https://emacsmirror.net][Emacsmirror]] package
265 database, low-level functions for querying the database, and a
266 =package.el=-like user interface for browsing the available packages.
267
268 #+begin_src emacs-lisp
269 (use-package epkg
270 :defer t)
271 #+end_src
272
273 ** No littering in =~/.emacs.d=
274
275 #+begin_quote
276 Help keeping ~/.emacs.d clean
277 #+end_quote
278
279 By default, even for Emacs' built-in packages, the configuration files
280 and persistent data are all over the place. Use =no-littering= to help
281 contain the mess.
282
283 #+begin_src emacs-lisp
284 (use-package no-littering
285 :demand t
286 :config
287 (savehist-mode 1)
288 (add-to-list 'savehist-additional-variables 'kill-ring)
289 (save-place-mode 1)
290 (setq auto-save-file-name-transforms
291 `((".*" ,(no-littering-expand-var-file-name "auto-save/") t))))
292 #+end_src
293
294 ** Custom file (=custom.el=)
295
296 I'm not planning on using the custom file much, but even so, I
297 definitely don't want it mixing with =init.el=. So, here; let's give
298 it it's own file. While at it, treat themes as safe.
299
300 #+begin_src emacs-lisp
301 (use-package custom
302 :no-require t
303 :config
304 (setq custom-file (no-littering-expand-etc-file-name "custom.el"))
305 (when (file-exists-p custom-file)
306 (load custom-file))
307 (setf custom-safe-themes t))
308 #+end_src
309
310 ** Better =$PATH= handling
311
312 Let's use [[https://github.com/purcell/exec-path-from-shell][exec-path-from-shell]] to make Emacs use the =$PATH= as set up
313 in my shell.
314
315 #+begin_src emacs-lisp
316 (use-package exec-path-from-shell
317 :defer 1
318 :init
319 (setq exec-path-from-shell-check-startup-files nil)
320 :config
321 (exec-path-from-shell-initialize)
322 ;; while we're at it, let's fix access to our running ssh-agent
323 (exec-path-from-shell-copy-env "SSH_AGENT_PID")
324 (exec-path-from-shell-copy-env "SSH_AUTH_SOCK"))
325 #+end_src
326
327 ** Server
328
329 Start server if not already running. Alternatively, can be done by
330 issuing =emacs --daemon= in the terminal, which can be automated with
331 a systemd service or using =brew services start emacs= on macOS. I use
332 Emacs as my window manager (via EXWM), so I always start Emacs on
333 login; so starting the server from inside Emacs is good enough for me.
334
335 See [[https://www.gnu.org/software/emacs/manual/html_node/emacs/Emacs-Server.html#Emacs-Server][Using Emacs as a Server]].
336
337 #+begin_src emacs-lisp
338 (use-package server
339 :config (or (server-running-p) (server-mode)))
340 #+end_src
341
342 ** Unicode support
343
344 Font stack with better unicode support, around =Ubuntu Mono= and
345 =Hack=.
346
347 #+begin_src emacs-lisp
348 (dolist (ft (fontset-list))
349 (set-fontset-font
350 ft
351 'unicode
352 (font-spec :name "Ubuntu Mono"))
353 (set-fontset-font
354 ft
355 'unicode
356 (font-spec
357 :name "Hack")
358 nil
359 'append)
360 (set-fontset-font
361 ft
362 'unicode
363 (font-spec
364 :name "Symbola monospacified for DejaVu Sans Mono")
365 nil
366 'append))
367 #+end_src
368
369 * Core
370 :PROPERTIES:
371 :CUSTOM_ID: core
372 :END:
373
374 ** Defaults
375
376 *** Time and battery in mode-line
377
378 Enable displaying time and battery in the mode-line, since I'm not
379 using the Xfce panel anymore. Also, I don't need to see the load
380 average on a regular basis, so disable that.
381
382 #+begin_src emacs-lisp
383 (use-package time
384 :ensure nil
385 :init
386 (setq display-time-default-load-average nil)
387 :config
388 (display-time-mode))
389
390 (use-package battery
391 :ensure nil
392 :config
393 (display-battery-mode))
394 #+end_src
395
396 *** Smaller fringe
397
398 Might want to set the fringe to a smaller value, especially if using
399 EXWM. I'm fine with the default for now.
400
401 #+begin_src emacs-lisp
402 ;; (fringe-mode '(3 . 1))
403 (fringe-mode nil)
404 #+end_src
405
406 *** Disable disabled commands
407
408 Emacs disables some commands by default that could persumably be
409 confusing for novice users. Let's disable that.
410
411 #+begin_src emacs-lisp
412 (setq disabled-command-function nil)
413 #+end_src
414
415 *** Kill-ring
416
417 Save what I copy into clipboard from other applications into Emacs'
418 kill-ring, which would allow me to still be able to easily access it
419 in case I kill (cut or copy) something else inside Emacs before
420 yanking (pasting) what I'd originally intended to.
421
422 #+begin_src emacs-lisp
423 (setq save-interprogram-paste-before-kill t)
424 #+end_src
425
426 *** Minibuffer
427
428 #+begin_src emacs-lisp
429 (setq enable-recursive-minibuffers t
430 resize-mini-windows t)
431 #+end_src
432
433 *** Lazy-person-friendly yes/no prompts
434
435 Lazy people would prefer to type fewer keystrokes, especially for yes
436 or no questions. I'm lazy.
437
438 #+begin_src emacs-lisp
439 (defalias 'yes-or-no-p #'y-or-n-p)
440 #+end_src
441
442 *** Startup screen and =*scratch*=
443
444 Firstly, let Emacs know that I'd like to have =*scratch*= as my
445 startup buffer.
446
447 #+begin_src emacs-lisp
448 (setq initial-buffer-choice t)
449 #+end_src
450
451 Now let's customize the =*scratch*= buffer a bit. First off, I don't
452 need the default hint.
453
454 #+begin_src emacs-lisp
455 (setq initial-scratch-message nil)
456 #+end_src
457
458 Also, let's use Text mode as the major mode, in case I want to
459 customize it (=*scratch*='s default major mode, Fundamental mode,
460 can't really be customized).
461
462 #+begin_src emacs-lisp
463 (setq initial-major-mode 'text-mode)
464 #+end_src
465
466 Inhibit the buffer list when more than 2 files are loaded.
467
468 #+begin_src emacs-lisp
469 (setq inhibit-startup-buffer-menu t)
470 #+end_src
471
472 I don't really need to see the startup screen or echo area message
473 either.
474
475 #+begin_src emacs-lisp
476 (advice-add #'display-startup-echo-area-message :override #'ignore)
477 (setq inhibit-startup-screen t
478 inhibit-startup-echo-area-message user-login-name)
479 #+end_src
480
481 *** More useful frame titles
482
483 Show either the file name or the buffer name (in case the buffer isn't
484 visiting a file). Borrowed from Emacs Prelude.
485
486 #+begin_src emacs-lisp
487 (setq frame-title-format
488 '("" invocation-name " - "
489 (:eval (if (buffer-file-name)
490 (abbreviate-file-name (buffer-file-name))
491 "%b"))))
492 #+end_src
493
494 *** Backups
495
496 Emacs' default backup settings aren't that great. Let's use more
497 sensible options. See documentation for the ~make-backup-file~
498 variable.
499
500 #+begin_src emacs-lisp
501 (setq backup-by-copying t
502 version-control t)
503 #+end_src
504
505 ** Packages
506
507 The packages in this section are absolutely essential to my everyday
508 workflow, and they play key roles in how I do my computing. They
509 immensely enhance the Emacs experience for me; both using Emacs, and
510 customizing it.
511
512 *** [[https://github.com/emacscollective/auto-compile][auto-compile]]
513
514 #+begin_src emacs-lisp
515 (use-package auto-compile
516 :demand t
517 :config
518 (auto-compile-on-load-mode)
519 (auto-compile-on-save-mode)
520 (setq auto-compile-display-buffer nil
521 auto-compile-mode-line-counter t
522 auto-compile-source-recreate-deletes-dest t
523 auto-compile-toggle-deletes-nonlib-dest t
524 auto-compile-update-autoloads t)
525 (add-hook 'auto-compile-inhibit-compile-hook
526 'auto-compile-inhibit-compile-detached-git-head))
527 #+end_src
528
529 *** TODO [[https://github.com/Kungsgeten/ryo-modal][ryo-modal]]
530
531 #+begin_quote
532 Roll your own modal mode
533 #+end_quote
534
535 *** [[https://github.com/ch11ng/exwm][EXWM]] (window manager)
536
537 #+begin_src emacs-lisp
538 (use-package exwm
539 :demand t
540 :config
541 (require 'exwm-config)
542
543 ;; Set the initial workspace number.
544 (setq exwm-workspace-number 4)
545
546 ;; Make class name the buffer name, truncating beyond 50 characters
547 (defun exwm-rename-buffer ()
548 (interactive)
549 (exwm-workspace-rename-buffer
550 (concat exwm-class-name ":"
551 (if (<= (length exwm-title) 50) exwm-title
552 (concat (substring exwm-title 0 49) "...")))))
553 (add-hook 'exwm-update-class-hook 'exwm-rename-buffer)
554 (add-hook 'exwm-update-title-hook 'exwm-rename-buffer)
555
556 ;; 's-R': Reset
557 (exwm-input-set-key (kbd "s-R") #'exwm-reset)
558 ;; 's-\': Switch workspace
559 (exwm-input-set-key (kbd "s-\\") #'exwm-workspace-switch)
560 ;; 's-N': Switch to certain workspace
561 (dotimes (i 10)
562 (exwm-input-set-key (kbd (format "s-%d" i))
563 (lambda ()
564 (interactive)
565 (exwm-workspace-switch-create i))))
566 ;; 's-SPC': Launch application
567 (exwm-input-set-key
568 (kbd "s-SPC")
569 (lambda (command)
570 (interactive (list (read-shell-command "➜ ")))
571 (start-process-shell-command command nil command)))
572
573 (exwm-input-set-key (kbd "M-s-SPC") #'counsel-linux-app)
574
575 ;; Shorten 'C-c C-q' to 'C-q'
576 (define-key exwm-mode-map [?\C-q] #'exwm-input-send-next-key)
577
578 ;; Line-editing shortcuts
579 (setq exwm-input-simulation-keys
580 '(;; movement
581 ([?\C-b] . [left])
582 ([?\M-b] . [C-left])
583 ([?\C-f] . [right])
584 ([?\M-f] . [C-right])
585 ([?\C-p] . [up])
586 ([?\C-n] . [down])
587 ([?\C-a] . [home])
588 ([?\C-e] . [end])
589 ([?\M-v] . [prior])
590 ([?\C-v] . [next])
591 ([?\C-d] . [delete])
592 ([?\C-k] . [S-end delete])
593 ;; cut/paste
594 ([?\C-w] . [?\C-x])
595 ([?\M-w] . [?\C-c])
596 ([?\C-y] . [?\C-v])
597 ;; search
598 ([?\C-s] . [?\C-f])))
599
600 ;; Enable EXWM
601 (exwm-enable)
602
603 (add-hook 'exwm-init-hook #'exwm-config--fix/ido-buffer-window-other-frame)
604
605 (require 'exwm-systemtray)
606 (exwm-systemtray-enable)
607
608 (require 'exwm-randr)
609 (exwm-randr-enable)
610
611 (exwm-input-set-key
612 (kbd "M-SPC")
613 (lambda ()
614 (interactive)
615 (start-process "rofi-pass" nil "rofi-pass"))))
616 #+end_src
617
618 *** [[https://orgmode.org/][Org mode]]
619
620 #+begin_quote
621 Org mode is for keeping notes, maintaining TODO lists, planning
622 projects, and authoring documents with a fast and effective plain-text
623 system.
624 #+end_quote
625
626 In short, my favourite way of life.
627
628 #+begin_src emacs-lisp
629 (setq org-src-tab-acts-natively t
630 org-src-preserve-indentation nil
631 org-edit-src-content-indentation 0)
632 #+end_src
633
634 *** [[https://magit.vc/][Magit]]
635
636 #+begin_quote
637 It's Magit! A Git porcelain inside Emacs.
638 #+end_quote
639
640 Not just how I do git, but /the/ way to do git.
641
642 #+begin_src emacs-lisp
643 (use-package magit
644 :defer t
645 :bind (("s-g" . magit-status)
646 ("C-x g" . magit-status)
647 ("C-x M-g" . magit-dispatch-popup))
648 :config
649 (magit-add-section-hook 'magit-status-sections-hook
650 'magit-insert-modules
651 'magit-insert-stashes
652 'append))
653 #+end_src
654
655 *** [[https://github.com/abo-abo/swiper][Ivy]] (and friends)
656
657 #+begin_quote
658 Ivy - a generic completion frontend for Emacs, Swiper - isearch with
659 an overview, and more. Oh, man!
660 #+end_quote
661
662 There's no way I could top that, so I won't attempt to.
663
664 **** Ivy
665
666 #+begin_src emacs-lisp
667 (use-package ivy
668 :bind
669 (:map ivy-minibuffer-map
670 ([escape] . keyboard-escape-quit)
671 ;; ("C-j" . ivy-next-line)
672 ;; ("C-k" . ivy-previous-line)
673 ([S-up] . ivy-previous-history-element)
674 ([S-down] . ivy-next-history-element)
675 ("DEL" . ivy-backward-delete-char))
676 :config
677 (ivy-mode 1))
678 #+end_src
679
680 **** Swiper
681
682 #+begin_src emacs-lisp
683 (use-package swiper
684 :bind (([remap isearch-forward] . swiper)
685 ([remap isearch-backward] . swiper)))
686 #+end_src
687
688 **** Counsel
689
690 #+begin_src emacs-lisp
691 (use-package counsel
692 :defer 1.5
693 :bind (([remap execute-extended-command] . counsel-M-x)
694 ([remap find-file] . counsel-find-file)
695 ("s-r" . counsel-recentf)
696 :map minibuffer-local-map
697 ("C-r" . counsel-minibuffer-history))
698 :config
699 (counsel-mode 1)
700 (defalias 'locate #'counsel-locate))
701 #+end_src
702
703 * Borg's =layer/essentials=
704
705 TODO: break this giant source block down into individual org sections.
706
707 #+begin_src emacs-lisp
708 (use-package dash
709 :config (dash-enable-font-lock))
710
711 (use-package diff-hl
712 :config
713 (setq diff-hl-draw-borders nil)
714 (global-diff-hl-mode)
715 (add-hook 'magit-post-refresh-hook 'diff-hl-magit-post-refresh t))
716
717 (use-package dired
718 :defer t
719 :config (setq dired-listing-switches "-alh"))
720
721 (use-package eldoc
722 :when (version< "25" emacs-version)
723 :config (global-eldoc-mode))
724
725 (use-package help
726 :defer t
727 :config (temp-buffer-resize-mode))
728
729 (progn ; `isearch'
730 (setq isearch-allow-scroll t))
731
732 (use-package lisp-mode
733 :config
734 (add-hook 'emacs-lisp-mode-hook 'outline-minor-mode)
735 (add-hook 'emacs-lisp-mode-hook 'reveal-mode)
736 (defun indent-spaces-mode ()
737 (setq indent-tabs-mode nil))
738 (add-hook 'lisp-interaction-mode-hook #'indent-spaces-mode))
739
740 (use-package man
741 :defer t
742 :config (setq Man-width 80))
743
744 (use-package paren
745 :config (show-paren-mode))
746
747 (use-package prog-mode
748 :config (global-prettify-symbols-mode)
749 (defun indicate-buffer-boundaries-left ()
750 (setq indicate-buffer-boundaries 'left))
751 (add-hook 'prog-mode-hook #'indicate-buffer-boundaries-left))
752
753 (use-package recentf
754 :demand t
755 :config (add-to-list 'recentf-exclude "^/\\(?:ssh\\|su\\|sudo\\)?:"))
756
757 (use-package savehist
758 :config (savehist-mode))
759
760 (use-package saveplace
761 :when (version< "25" emacs-version)
762 :config (save-place-mode))
763
764 (use-package simple
765 :config (column-number-mode))
766
767 (progn ; `text-mode'
768 (add-hook 'text-mode-hook #'indicate-buffer-boundaries-left))
769
770 (use-package tramp
771 :defer t
772 :config
773 (add-to-list 'tramp-default-proxies-alist '(nil "\\`root\\'" "/ssh:%h:"))
774 (add-to-list 'tramp-default-proxies-alist '("localhost" nil nil))
775 (add-to-list 'tramp-default-proxies-alist
776 (list (regexp-quote (system-name)) nil nil)))
777
778 (use-package undo-tree
779 :config
780 (global-undo-tree-mode)
781 (setq undo-tree-mode-lighter ""))
782 #+end_src
783
784 * Programming modes
785
786 ** Lean mode
787
788 #+begin_src emacs-lisp
789 (use-package lean-mode
790 :bind (:map lean-mode-map
791 ("S-SPC" . company-complete)))
792 #+end_src
793
794 * Post initialization
795 :PROPERTIES:
796 :CUSTOM_ID: post-initialization
797 :END:
798
799 Display how long it took to load the init file.
800
801 #+begin_src emacs-lisp
802 (message "Loading %s...done (%.3fs)" user-init-file
803 (float-time (time-subtract (current-time)
804 ab--before-user-init-time)))
805 #+end_src
806
807 * Footer
808 :PROPERTIES:
809 :CUSTOM_ID: footer
810 :END:
811
812 #+begin_src emacs-lisp :comments none
813 ;;; init.el ends here
814 #+end_src